Nonchromaffin paraganglioma in the nose and paranasal sinuses.

Nonchromaffin paraganglioma occurring in the nose and paranasal sinuses are extremely rare. The authors have experienced a case of nonchromaffin paraganglioma of nasal cavity which extended to the epipharynx. To our knowledge, this reported case is the fourth case that has appeared in the world literature. The patient, a 31-year-old female, had complained of a right nasal obstruction and mucopurulent rhinorrhea for two years. The right nasal cavity was filled with a polypoid mass showing no bleeding tendency or necrosis. Radiographs revealed a homogeneous shadow which occupied the entire nasal cavity and paranasal sinuses. Histopathological studies revealed that the tumor showed typical findings of nonchromaffin paraganglioma and neurosecretory granules in cytoplasm were observed by electron microscopic study. Subsequently, the tumor recurred at on the posterior epipharyngeal wall after a duration of one year and three months, and was removed completely. Since then, there was no recurrence of the tumor until the present time.